/**
 * vim: set ts=4 :
 * =============================================================================
 * Left 4 Downtown SourceMod Extension
 * Copyright (C) 2009 Igor "Downtown1" Smirnov.
 * =============================================================================
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, version 3.0, as published by the
 * Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * As a special exception, AlliedModders LLC gives you permission to link the
 * code of this program (as well as its derivative works) to "Half-Life 2," the
 * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
 * by the Valve Corporation.  You must obey the GNU General Public License in
 * all respects for all other code used.  Additionally, AlliedModders LLC grants
 * this exception to all derivative works.  AlliedModders LLC defines further
 * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
 * or <http://www.sourcemod.net/license.php>.
 *
 * Version: $Id$
 */

#ifndef _INCLUDE_SOURCEMOD_BOSS_SPAWNS_H_
#define _INCLUDE_SOURCEMOD_BOSS_SPAWNS_H_

class BossSpawns
{
public:

	static void Init(ISourcePawnEngine *spengine, IGameConfig *gameconf);

	BossSpawns();
	~BossSpawns();

	/* 
		patch SpawnWitch/SpawnTank to get detoured
	*/
	void Patch();

	/*
		remove the previous patches and restore the binaries back to normal 
	*/
	void Unpatch();

protected:
	void PatchFromSignature(const char *signatureName, void *targetFunction, void *&originalFunction, unsigned char *&signature);

	class Detours
	{
	public:
		typedef void * (Detours::*FunctionType)(void *, void*);

		void *SpawnTank(void *vector, void *qangle);
		void *SpawnWitch(void *vector, void *qangle);

		/* goes to the original functions */
		static FunctionType SpawnTankTrampoline;
		static FunctionType SpawnWitchTrampoline;
	};

	Detours _detours;

private:
	bool _isPatched;

	void *SpawnkTankSignature;
	void *SpawnWitchSignature;

	static ISourcePawnEngine *_spengine;
	static IGameConfig *_gameconf;
};

#endif
